Java의 탐색 구성 요소를 사용하여 Android KnowMyBoard 앱에 Huawei Map Kit 및 Location Kit 통합
2022-10-19 last update
38 minutes reading navigationcomponent huaweilocationkit huaweimapkit hmscore
소개
이 기사에서는 Huawei ML 키트, 지도 키트 및 위치 키트를 Android 애플리케이션 KnowMyBoard에 통합하는 방법을 배웁니다. Account Kit는 사용자 기반이 큰 앱에 원활한 로그인 기능을 제공합니다.
Android용 위치 키트 SDK는 Android 앱용 위치 관련 API를 제공합니다. 이러한 API는 주로 융합 위치, 활동 식별, 지오펜스, 고정밀 위치, 실내 위치 및 지오코딩과 같은 6가지 기능과 관련됩니다. 이 모드는 휴대폰 및 Huawei 태블릿에 적용할 수 있습니다. 우리는 사용자의 위치를 얻기 위해 Location kit를 사용하고 있습니다.
Android용 Huawei Map SDK는 지도를 개발하기 위해 호출할 수 있는 API 세트입니다. 이 SDK를 사용하여 지도 표시, 지도 상호 작용, 지도 그리기 및 지도 스타일 사용자 지정을 포함하여 지도 관련 기능을 Android 앱에 쉽게 추가할 수 있습니다.
지원되는 장치
지원 국가/지역
지원 국가/지역
개발 개요
Android Studio IDE를 설치해야 하며 Android 애플리케이션 개발에 대한 사전 지식이 있다고 가정합니다.
하드웨어 요구 사항
소프트웨어 요구 사항
통합 단계
1단계. Huawei 개발자 웹사이트에서 Huawei 개발자 계정 및 완전한 신원 확인, 등록 참조Huawei ID.
2단계. Create project in AppGallery Connect
3단계. Adding HMS Core SDK
코딩을 시작하자
메인 액티비티.자바
public class MainActivity extends AppCompatActivity {
LoginViewModel loginViewModel;
private MLTextAnalyzer mTextAnalyzer;
public Uri imagePath;
Bitmap bitmap;
static String TAG = "TAG";
ArrayList<String> result = new ArrayList<>();
MLLocalLangDetector myLocalLangDetector;
MLLocalTranslator myLocalTranslator;
String textRecognized;
ProgressDialog progressDialog;
NavController navController;
ActivityMainBinding activityMainBinding;
BottomNavigationView bottomNavigationView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
activityMainBinding = DataBindingUtil.setContentView(MainActivity.this,R.layout.activity_main);
loginViewModel = new ViewModelProvider(MainActivity.this).get(LoginViewModel.class);
navController = Navigation.findNavController(MainActivity.this, R.id.nav_host_fragment);
MyApplication.setActivity(this);
progressDialog = new ProgressDialog(this);
progressDialog.setCancelable(false);
bottomNavigationView = activityMainBinding.bottomNavigation;
NavigationUI.setupWithNavController(bottomNavigationView, navController);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
// Process the authorization result to obtain the authorization code from AuthAccount.
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 8888) {
Task<AuthAccount> authAccountTask = AccountAuthManager.parseAuthResultFromIntent(data);
if (authAccountTask.isSuccessful()) {
// The sign-in is successful, and the user's ID information and authorization code are obtained.
AuthAccount authAccount = authAccountTask.getResult();
UserData userData = new UserData();
userData.setAccessToken(authAccount.getAccessToken());
userData.setCountryCode(authAccount.getCountryCode());
userData.setDisplayName(authAccount.getDisplayName());
userData.setEmail(authAccount.getEmail());
userData.setFamilyName(authAccount.getFamilyName());
userData.setGivenName(authAccount.getGivenName());
userData.setIdToken(authAccount.getIdToken());
userData.setOpenId(authAccount.getOpenId());
userData.setUid(authAccount.getUid());
userData.setPhotoUriString(authAccount.getAvatarUri().toString());
userData.setUnionId(authAccount.getUnionId());
Gson gson = new Gson();
Log.e("TAG", "sign in success : " + gson.toJson(authAccount));
loginViewModel = new ViewModelProvider(MainActivity.this).get(LoginViewModel.class);
loginViewModel.sendData(authAccount.getDisplayName());
} else {
// The sign-in failed.
Log.e("TAG", "sign in failed:" + ((ApiException) authAccountTask.getException()).getStatusCode());
}
}
if (requestCode == 2323 && resultCode == RESULT_OK && data != null) {
progressDialog.setMessage("Initializing text detection..");
progressDialog.show();
imagePath = data.getData();
try {
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imagePath);
} catch (IOException e) {
e.printStackTrace();
Log.e("TAG", " BITMAP ERROR");
}
Log.d("TAG", "Path " + imagePath.getPath());
try {
Bitmap selectedBitmap = MediaStore.Images.Media.getBitmap(getContentResolver(), imagePath);
asyncAnalyzeText(selectedBitmap);
} catch (IOException e) {
e.printStackTrace();
progressDialog.dismiss();
}
}
}
private void asyncAnalyzeText(Bitmap bitmap) {
if (mTextAnalyzer == null) {
createMLTextAnalyzer();
}
MLFrame frame = MLFrame.fromBitmap(bitmap);
Task<MLText> task = mTextAnalyzer.asyncAnalyseFrame(frame);
task.addOnSuccessListener(new OnSuccessListener<MLText>() {
@Override
public void onSuccess(MLText text) {
progressDialog.setMessage("Initializing language detection..");
Log.d("TAG", "#==>" + text.getStringValue());
textRecognized = text.getStringValue().trim();
if(!textRecognized.isEmpty()){
// Create a local language detector.
MLLangDetectorFactory factory = MLLangDetectorFactory.getInstance();
MLLocalLangDetectorSetting setting = new MLLocalLangDetectorSetting.Factory()
// Set the minimum confidence threshold for language detection.
.setTrustedThreshold(0.01f)
.create();
myLocalLangDetector = factory.getLocalLangDetector(setting);
Task<String> firstBestDetectTask = myLocalLangDetector.firstBestDetect(textRecognized);
firstBestDetectTask.addOnSuccessListener(new OnSuccessListener<String>() {
@Override
public void onSuccess(String languageDetected) {
progressDialog.setMessage("Initializing text translation..");
// Processing logic for detection success.
Log.d("TAG", "Lang detect :" + languageDetected);
textTranslate(languageDetected, textRecognized, bitmap);
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(Exception e) {
// Processing logic for detection failure.
Log.e("TAG", "Lang detect error:" + e.getMessage());
}
});
}else{
progressDialog.dismiss();
showErrorDialog("Failed to recognize text.");
}
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(Exception e) {
Log.e("TAG", "#==>" + e.getMessage());
}
});
}
private void showErrorDialog(String msg) {
AlertDialog alertDialog = new AlertDialog.Builder(this).create();
alertDialog.setTitle("Error");
alertDialog.setMessage(msg);
alertDialog.setButton(AlertDialog.BUTTON_POSITIVE, "OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
alertDialog.show();
}
private void textTranslate(String languageDetected, String textRecognized, Bitmap uri) {
MLApplication.initialize(getApplication());
MLApplication.getInstance().setApiKey("$54fDAEDAF4 C9qhwQ==");
// Create an offline translator.
MLLocalTranslateSetting setting = new MLLocalTranslateSetting.Factory()
// Set the source language code. The ISO 639-1 standard is used. This parameter is mandatory. If this parameter is not set, an error may occur.
.setSourceLangCode(languageDetected)
// Set the target language code. The ISO 639-1 standard is used. This parameter is mandatory. If this parameter is not set, an error may occur.
.setTargetLangCode("en")
.create();
myLocalTranslator = MLTranslatorFactory.getInstance().getLocalTranslator(setting);
// Set the model download policy.
MLModelDownloadStrategy downloadStrategy = new MLModelDownloadStrategy.Factory()
.needWifi()// It is recommended that you download the package in a Wi-Fi environment.
.create();
// Create a download progress listener.
MLModelDownloadListener modelDownloadListener = new MLModelDownloadListener() {
@Override
public void onProcess(long alreadyDownLength, long totalLength) {
runOnUiThread(new Runnable() {
@Override
public void run() {
// Display the download progress or perform other operations.
}
});
}
};
myLocalTranslator.preparedModel(downloadStrategy, modelDownloadListener).
addOnSuccessListener(new OnSuccessListener<Void>() {
@Override
public void onSuccess(Void aVoid) {
// Called when the model package is successfully downloaded.
// input is a string of less than 5000 characters.
final Task<String> task = myLocalTranslator.asyncTranslate(textRecognized);
// Before translation, ensure that the models have been successfully downloaded.
task.addOnSuccessListener(new OnSuccessListener<String>() {
@Override
public void onSuccess(String translated) {
// Processing logic for detection success.
result.clear();
result.add(languageDetected.trim());
result.add(textRecognized.trim());
result.add(translated.trim());
loginViewModel.setImage(uri);
loginViewModel.setTextRecongnized(result);
progressDialog.dismiss();
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(Exception e) {
// Processing logic for detection failure.
progressDialog.dismiss();
}
});
}
}).addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(Exception e) {
// Called when the model package fails to be downloaded.
progressDialog.dismiss();
}
});
}
private void createMLTextAnalyzer() {
MLLocalTextSetting setting = new MLLocalTextSetting.Factory()
.setOCRMode(MLLocalTextSetting.OCR_DETECT_MODE)
.create();
mTextAnalyzer = MLAnalyzerFactory.getInstance().getLocalTextAnalyzer(setting);
}
@Override
protected void onStop() {
if (myLocalLangDetector != null) {
myLocalLangDetector.stop();
}
if (myLocalTranslator!= null) {
myLocalTranslator.stop();
}
if(progressDialog!= null){
progressDialog.dismiss();
}
super.onStop();
}
}
로그인보기 모델.자바
public class LoginFragment extends Fragment implements OnMapReadyCallback{
FragmentLoginBinding loginBinding;
LoginViewModel loginViewModel;
Menu menu;
SharedPreferences prefs;
SharedPreferences.Editor editor;
NavController navController;
private String MY_PREF_NAME = "my_pref_name";
private String TAG = "TAG";
private static final String MAPVIEW_BUNDLE_KEY = "MapViewBundleKey";
RequestLocationData locationData;
HuaweiMap hMap;
public LoginFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
loginBinding = DataBindingUtil.inflate(inflater, R.layout.fragment_login, container, false);
loginViewModel = new ViewModelProvider(getActivity()).get(LoginViewModel.class);
loginBinding.setLoginViewModel(loginViewModel);
locationData = new RequestLocationData(getContext(),getActivity(),loginViewModel);
locationData.setLoginViewModel(loginViewModel);
locationData.initFusionLocationProviderClint();
locationData.checkPermission();
locationData.checkDeviceLocationSettings();
initMap(savedInstanceState);
loginViewModel.getLocationResult().observeForever(new Observer<LocationResult>() {
@Override
public void onChanged(LocationResult locationResult) {
refreshLocation(locationResult);
}
});
return loginBinding.getRoot();
}
private void initMap(Bundle savedInstanceState) {
Bundle mapViewBundle = null;
if (savedInstanceState != null) {
mapViewBundle = savedInstanceState.getBundle("MapViewBundleKey");
}
loginBinding.mapview.onCreate(mapViewBundle);
loginBinding.mapview.getMapAsync(this) ;
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
// Initialize the SDK.
MapsInitializer.initialize(getContext());
}
@Override
public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
menu.clear();
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.main, menu);
this.menu = menu;
disableMenu(menu);
}
private void disableMenu(Menu menu) {
try {
if (menu != null) {
if (getPreferenceValue().equals("user_name")) {
menu.findItem(R.id.menu_login_logout).setVisible(false);
menu.findItem(R.id.menu_cancel_auth).setVisible(false);
menu.findItem(R.id.menu_login).setVisible(true);
getActivity().setTitle(getResources().getString(R.string.app_name));
} else {
menu.findItem(R.id.menu_login_logout).setVisible(true);
menu.findItem(R.id.menu_cancel_auth).setVisible(true);
menu.findItem(R.id.menu_login).setVisible(false);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
private void enableMenu(Menu menu) {
try {
menu.findItem(R.id.menu_login_logout).setVisible(true);
menu.findItem(R.id.menu_cancel_auth).setVisible(true);
menu.findItem(R.id.menu_login).setVisible(false);
} catch (Exception e) {
e.printStackTrace();
}
}
@SuppressLint("NonConstantResourceId")
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_cancel_auth:
setPreferenceValue("user_name");
loginViewModel.cancelAuthorization();
disableMenu(menu);
return true;
case R.id.menu_login_logout:
setPreferenceValue("user_name");
loginViewModel.logoutHuaweiID();
disableMenu(menu);
return true;
case R.id.menu_login:
loginViewModel.loginClicked();
return true;
case R.id.option_refresh_location:
locationData.refreshLocation();
return true;
default:
break;
}
return super.onOptionsItemSelected(item);
}
public void updateMessage(String msg) {
getActivity().setTitle(msg);
}
void setPreferenceValue(String userName) {
editor = getActivity().getSharedPreferences(MY_PREF_NAME, MODE_PRIVATE).edit();
editor.putString("user_name", userName);
editor.apply();
}
String getPreferenceValue() {
prefs = getActivity().getSharedPreferences(MY_PREF_NAME, MODE_PRIVATE);
return prefs.getString("user_name", "user_name");
}
@RequiresPermission(allOf = {ACCESS_FINE_LOCATION, ACCESS_WIFI_STATE})
@Override
public void onMapReady(HuaweiMap huaweiMap) {
try{
Log.d(TAG, "Map ready");
hMap = huaweiMap;
onHuaweiMapReady();
}catch (Exception e){
e.printStackTrace();
}
}
private void onHuaweiMapReady() {
if(hMap!=null){
hMap.setMapType(MAP_TYPE_NORMAL);
hMap.setBuildingsEnabled(true);
// Enable the my-location layer.
hMap.setMyLocationEnabled(true);
// Enable the my-location icon.
hMap.getUiSettings().setMyLocationButtonEnabled(true);
hMap.getUiSettings().setGestureScaleByMapCenter(true);
}
if(locationData!=null){
locationData.refreshLocation();
}
}
private void refreshLocation(LocationResult locationResult) {
try{
Log.d(TAG, "Map updated with ");
Log.d(TAG, "Latitude :"+locationResult.getLastLocation().getLongitude()+" Longitude :"+locationResult.getLastLocation().getLongitude());
LatLng latLng1 = new LatLng(locationResult.getLastHWLocation().getLatitude(), locationResult.getLastHWLocation().getLongitude());
float zoom = 10.0f;
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng1,zoom);
hMap.animateCamera(cameraUpdate);
}catch (Exception e){
e.printStackTrace();
// onHuaweiMapReady();
}
}
@Override
public void onLowMemory() {
super.onLowMemory();
loginBinding.mapview.onLowMemory();
}
@Override
public void onDestroy() {
super.onDestroy();
loginBinding.mapview.onDestroy();
}
@Override
public void onStop() {
super.onStop();
loginBinding.mapview.onStop();
locationData.disableLocationData();
}
@Override
public void onPause() {
super.onPause();
loginBinding.mapview.onPause();
}
@Override
public void onStart() {
super.onStart();
loginBinding.mapview.onStart();
}
@Override
public void onSaveInstanceState(@NonNull Bundle outState) {
super.onSaveInstanceState(outState);
Bundle mapViewBundle = outState.getBundle(MAPVIEW_BUNDLE_KEY);
if (mapViewBundle == null) {
mapViewBundle = new Bundle();
outState.putBundle(MAPVIEW_BUNDLE_KEY, mapViewBundle);
}
loginBinding.mapview.onSaveInstanceState(mapViewBundle);
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
navController = Navigation.findNavController(view);
}
}
요청위치데이터.자바
public class RequestLocationData {
static String TAG = "TAG";
SettingsClient settingsClient;
private int isLocationSettingSuccess = 0;
private LocationRequest myLocationRequest;
// Define a fusedLocationProviderClient object.
private FusedLocationProviderClient fusedLocationProviderClient;
LocationCallback myLocationCallback;
Context context;
Activity activity;
LocationResult locationResult;
LoginViewModel loginViewModel;
public RequestLocationData(Context context, FragmentActivity activity, LoginViewModel loginViewModel) {
setContext(context);
setActivity(activity);
setLoginViewModel(loginViewModel);
}
public LoginViewModel getLoginViewModel() {
return loginViewModel;
}
public void setLoginViewModel(LoginViewModel loginViewModel) {
this.loginViewModel = loginViewModel;
}
public Context getContext() {
return context;
}
public void setContext(Context context) {
this.context = context;
}
public Activity getActivity() {
return activity;
}
public void setActivity(Activity activity) {
this.activity = activity;
}
public void initFusionLocationProviderClint(){
// Instantiate the fusedLocationProviderClient object.
fusedLocationProviderClient = LocationServices.getFusedLocationProviderClient(getActivity());
settingsClient = LocationServices.getSettingsClient(getActivity());
}
public void checkDeviceLocationSettings() {
LocationSettingsRequest.Builder builder = new LocationSettingsRequest.Builder();
myLocationRequest = new LocationRequest();
builder.addLocationRequest(myLocationRequest);
LocationSettingsRequest locationSettingsRequest = builder.build();
// Check the device location settings.
settingsClient.checkLocationSettings(locationSettingsRequest)
// Define the listener for success in calling the API for checking device location settings.
.addOnSuccessListener(locationSettingsResponse -> {
LocationSettingsStates locationSettingsStates =
locationSettingsResponse.getLocationSettingsStates();
StringBuilder stringBuilder = new StringBuilder();
// Check whether the location function is enabled.
stringBuilder.append(",\nisLocationUsable=")
.append(locationSettingsStates.isLocationUsable());
// Check whether HMS Core (APK) is available.
stringBuilder.append(",\nisHMSLocationUsable=")
.append(locationSettingsStates.isHMSLocationUsable());
Log.i(TAG, "checkLocationSetting onComplete:" + stringBuilder.toString());
// Set the location type.
myLocationRequest.setPriority(LocationRequest.PRIORITY_HIGH_ACCURACY);
// Set the number of location updates to 1.
myLocationRequest.setNumUpdates(1);
isLocationSettingSuccess = 1;
})
// Define callback for failure in checking the device location settings.
.addOnFailureListener(new OnFailureListener() {
@Override
public void onFailure(Exception e) {
Log.i(TAG, "checkLocationSetting onFailure:" + e.getMessage());
}
});
}
public void checkPermission() {
// Dynamically apply for required permissions if the API level is 28 or lower.
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.P) {
Log.i(TAG, "android sdk <= 28 Q");
if (ActivityCompat.checkSelfPermission(getContext(),
Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(getContext(),
Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
String[] strings =
{Manifest.permission.READ_EXTERNAL_STORAGE,Manifest.permission.MANAGE_MEDIA,Manifest.permission.MEDIA_CONTENT_CONTROL,Manifest.permission.ACCESS_FINE_LOCATION, Manifest.permission.ACCESS_COARSE_LOCATION};
ActivityCompat.requestPermissions(getActivity(), strings, 1);
}
} else {
// Dynamically apply for the android.permission.ACCESS_BACKGROUND_LOCATION permission in addition to the preceding permissions if the API level is higher than 28.
if (ActivityCompat.checkSelfPermission(getActivity(),
Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(getContext(),
Manifest.permission.ACCESS_COARSE_LOCATION) != PackageManager.PERMISSION_GRANTED
&& ActivityCompat.checkSelfPermission(getContext(),
"android.permission.ACCESS_BACKGROUND_LOCATION") != PackageManager.PERMISSION_GRANTED) {
String[] strings = {android.Manifest.permission.ACCESS_FINE_LOCATION,
android.Manifest.permission.ACCESS_COARSE_LOCATION,Manifest.permission.MEDIA_CONTENT_CONTROL,Manifest.permission.MANAGE_MEDIA,
"android.permission.ACCESS_BACKGROUND_LOCATION"};
ActivityCompat.requestPermissions(getActivity(), strings, 2);
}
}
}
public LocationResult refreshLocation() {
if (isLocationSettingSuccess == 1) {
myLocationCallback = new LocationCallback() {
@Override
public void onLocationResult(LocationResult locationResult) {
if (locationResult != null) {
getLoginViewModel().setLocationResult(locationResult);
}
}
};
fusedLocationProviderClient.requestLocationUpdates(myLocationRequest, myLocationCallback, Looper.getMainLooper());
} else {
Log.d(TAG, "Failed to get location settings");
}
return locationResult;
}
public void disableLocationData(){
fusedLocationProviderClient.disableBackgroundLocation();
fusedLocationProviderClient.removeLocationUpdates(myLocationCallback);
}
}
navigation_graph.xml
<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/navigation_graph"
app:startDestination="@id/loginFragment">
<fragment
android:id="@+id/loginFragment"
android:name="com.huawei.hms.knowmyboard.dtse.activity.fragments.LoginFragment"
android:label="LoginFragment"/>
<fragment
android:id="@+id/mainFragment"
android:name="com.huawei.hms.knowmyboard.dtse.activity.fragments.MainFragment"
android:label="MainFragment"/>
<fragment
android:id="@+id/cameraFragment"
android:name="com.huawei.hms.knowmyboard.dtse.activity.fragments.CameraFragment"
android:label="fragment_camera"
tools:layout="@layout/fragment_camera" />
</navigation>
*bottom_navigation_menu.xml *
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="@+id/loginFragment"
android:icon="@android:drawable/ic_menu_agenda"
android:title="Home" />
<item
android:id="@+id/mainFragment"
app:showAsAction="always"
android:icon="@android:drawable/ic_menu_gallery"
android:title="Gallery" />
<item
android:id="@+id/cameraFragment"
android:icon="@android:drawable/ic_menu_camera"
app:showAsAction="always"
android:title="Camera" />
</menu>
로그인Fragment.java
public class LoginFragment extends Fragment implements OnMapReadyCallback{
FragmentLoginBinding loginBinding;
LoginViewModel loginViewModel;
Menu menu;
SharedPreferences prefs;
SharedPreferences.Editor editor;
NavController navController;
private String MY_PREF_NAME = "my_pref_name";
private String TAG = "TAG";
private static final String MAPVIEW_BUNDLE_KEY = "MapViewBundleKey";
RequestLocationData locationData;
HuaweiMap hMap;
public LoginFragment() {
// Required empty public constructor
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
loginBinding = DataBindingUtil.inflate(inflater, R.layout.fragment_login, container, false);
loginViewModel = new ViewModelProvider(getActivity()).get(LoginViewModel.class);
loginBinding.setLoginViewModel(loginViewModel);
locationData = new RequestLocationData(getContext(),getActivity(),loginViewModel);
locationData.setLoginViewModel(loginViewModel);
locationData.initFusionLocationProviderClint();
locationData.checkPermission();
locationData.checkDeviceLocationSettings();
initMap(savedInstanceState);
loginViewModel.getMessage().observeForever(new Observer<String>() {
@Override
public void onChanged(String message) {
updateMessage(message);
if (!message.equals(getResources().getString(R.string.app_name))) {
setPreferenceValue(message);
enableMenu(menu);
} else {
disableMenu(menu);
setPreferenceValue("user_name");
}
}
});
loginViewModel.getLocationResult().observeForever(new Observer<LocationResult>() {
@Override
public void onChanged(LocationResult locationResult) {
refreshLocation(locationResult);
}
});
return loginBinding.getRoot();
}
private void initMap(Bundle savedInstanceState) {
Bundle mapViewBundle = null;
if (savedInstanceState != null) {
mapViewBundle = savedInstanceState.getBundle("MapViewBundleKey");
}
loginBinding.mapview.onCreate(mapViewBundle);
loginBinding.mapview.getMapAsync(this) ;
}
@Override
public void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setHasOptionsMenu(true);
// Initialize the SDK.
MapsInitializer.initialize(getContext());
}
@Override
public void onCreateOptionsMenu(@NonNull Menu menu, @NonNull MenuInflater inflater) {
menu.clear();
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.main, menu);
this.menu = menu;
disableMenu(menu);
}
private void disableMenu(Menu menu) {
try {
if (menu != null) {
if (getPreferenceValue().equals("user_name")) {
menu.findItem(R.id.menu_login_logout).setVisible(false);
menu.findItem(R.id.menu_cancel_auth).setVisible(false);
menu.findItem(R.id.menu_login).setVisible(true);
getActivity().setTitle(getResources().getString(R.string.app_name));
} else {
menu.findItem(R.id.menu_login_logout).setVisible(true);
menu.findItem(R.id.menu_cancel_auth).setVisible(true);
menu.findItem(R.id.menu_login).setVisible(false);
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
private void enableMenu(Menu menu) {
try {
menu.findItem(R.id.menu_login_logout).setVisible(true);
menu.findItem(R.id.menu_cancel_auth).setVisible(true);
menu.findItem(R.id.menu_login).setVisible(false);
} catch (Exception e) {
e.printStackTrace();
}
}
@SuppressLint("NonConstantResourceId")
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_cancel_auth:
setPreferenceValue("user_name");
loginViewModel.cancelAuthorization();
disableMenu(menu);
return true;
case R.id.menu_login_logout:
setPreferenceValue("user_name");
loginViewModel.logoutHuaweiID();
disableMenu(menu);
return true;
case R.id.menu_login:
loginViewModel.loginClicked();
return true;
case R.id.option_refresh_location:
locationData.refreshLocation();
return true;
default:
break;
}
return super.onOptionsItemSelected(item);
}
public void updateMessage(String msg) {
getActivity().setTitle(msg);
}
void setPreferenceValue(String userName) {
editor = getActivity().getSharedPreferences(MY_PREF_NAME, MODE_PRIVATE).edit();
editor.putString("user_name", userName);
editor.apply();
}
String getPreferenceValue() {
prefs = getActivity().getSharedPreferences(MY_PREF_NAME, MODE_PRIVATE);
return prefs.getString("user_name", "user_name");
}
@RequiresPermission(allOf = {ACCESS_FINE_LOCATION, ACCESS_WIFI_STATE})
@Override
public void onMapReady(HuaweiMap huaweiMap) {
try{
Log.d(TAG, "Map ready");
hMap = huaweiMap;
onHuaweiMapReady();
}catch (Exception e){
e.printStackTrace();
}
}
private void onHuaweiMapReady() {
if(hMap!=null){
hMap.setMapType(MAP_TYPE_NORMAL);
hMap.setBuildingsEnabled(true);
// Enable the my-location layer.
hMap.setMyLocationEnabled(true);
// Enable the my-location icon.
hMap.getUiSettings().setMyLocationButtonEnabled(true);
hMap.getUiSettings().setGestureScaleByMapCenter(true);
}
if(locationData!=null){
locationData.refreshLocation();
}
}
private void refreshLocation(LocationResult locationResult) {
try{
Log.d(TAG, "Map updated with ");
Log.d(TAG, "Latitude :"+locationResult.getLastLocation().getLongitude()+" Longitude :"+locationResult.getLastLocation().getLongitude());
LatLng latLng1 = new LatLng(locationResult.getLastHWLocation().getLatitude(), locationResult.getLastHWLocation().getLongitude());
float zoom = 10.0f;
CameraUpdate cameraUpdate = CameraUpdateFactory.newLatLngZoom(latLng1,zoom);
hMap.animateCamera(cameraUpdate);
}catch (Exception e){
e.printStackTrace();
}
}
@Override
public void onLowMemory() {
super.onLowMemory();
loginBinding.mapview.onLowMemory();
}
@Override
public void onDestroy() {
super.onDestroy();
loginBinding.mapview.onDestroy();
}
@Override
public void onStop() {
super.onStop();
loginBinding.mapview.onStop();
locationData.disableLocationData();
}
@Override
public void onPause() {
super.onPause();
loginBinding.mapview.onPause();
}
@Override
public void onStart() {
super.onStart();
loginBinding.mapview.onStart();
}
@Override
public void onSaveInstanceState(@NonNull Bundle outState) {
super.onSaveInstanceState(outState);
Bundle mapViewBundle = outState.getBundle(MAPVIEW_BUNDLE_KEY);
if (mapViewBundle == null) {
mapViewBundle = new Bundle();
outState.putBundle(MAPVIEW_BUNDLE_KEY, mapViewBundle);
}
loginBinding.mapview.onSaveInstanceState(mapViewBundle);
}
@Override
public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
navController = Navigation.findNavController(view);
}
}
결과
트릭과 팁
agconnect-services.json 파일이 추가되었는지 확인합니다.
필수 종속성이 추가되었는지 확인
AGC에서 서비스가 활성화되어 있는지 확인하십시오.
gradle.build 파일에서 데이터 바인딩 활성화
하단 탐색 ID가 탐색 그래프의 조각 ID와 같아야 합니다.
결론
이 기사에서는 Android 애플리케이션 KnowMyBoard에 Huawei Map kit, Location kit를 통합하는 방법을 배웠습니다. 이전 기사 파트 2를 여기에서 볼 수도 있습니다. 지도 키트 기능이 이 샘플과 같이 여러분에게도 도움이 되기를 바라며 요구 사항에 따라 지도 키트를 사용할 수 있습니다.
읽어주셔서 감사합니다. 이 기사가 Android 애플리케이션 KnowMyBoard에서 Huawei Map kit와 Location kit의 통합을 이해하는 데 도움이 되기를 바랍니다.
참조
Map Kit – Training video
Location Kit – Training video